Au-RE-TiO2 nanocomposites. surface characteristics and photoactivity

• Autorzy: Krukowska A. , Reszczynska J. , Zaleska A.

Identyfikatory

DOI

10.5277/ppmp140211

• Języki publikacji: EN

Abstrakty

EN

Photocatalysts based on TiO2 co-doped with rare earth metal (RE) and gold nanoparticles have been prepared using a sol-gel method and followed by gold reduction. Specific surface areas of the modified photocatalysts were calculated by the Brunauer-Emmett-Teller method (BET). Diffuse reflectance spectra of the obtained photocatalysts were recorded with a UV-Vis spectrophotometer (DRS UV-Vis). The influence of the type of rare earth metal on photoactivity of Au-RE-TiO2 nanocomposites in model reaction manifested by toluene photodegradation in a gas phase was investigated. The obtained results showed that photodegradation of toluene in the gas phase is possible over Au-RE-TiO2 irradiated by UV or Vis light. The Au-RE-TiO2 photocatalysts relative to undoped TiO2, did not caused an increase of toluene degradation in the air under visible light. The samples doped with Er3+ or Pr3+ presented the highest activity in solar light among of Au-RE-TiO2. It was observed that both metal dopants affected the surface area of TiO2. The Au-RE-TiO2 photocatalysts relative to undoped TiO2 exhibited the absorption properties under Vis light.

Słowa kluczowe

EN

photocatalysis; modified TiO2; rare earth metal; Au nanoparticles; toluene degradation

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2014
• Tom: Vol. 50, iss. 2
• Strony: 551--561
• Opis fizyczny: Bibliogr. 22 poz., rys., tab.

Twórcy

autor

Krukowska A.

• Department of Chemical Technology, Gdansk University of Technology, 80-233 Gdansk, Poland
• Department of Environmental Engineering, University of Gdansk, 80-952 Gdansk, Poland

autor

Reszczynska J.

• Department of Chemical Technology, Gdansk University of Technology, 80-233 Gdansk, Poland

autor

Zaleska A.

• Department of Chemical Technology, Gdansk University of Technology, 80-233 Gdansk, Poland
• Department of Environmental Engineering, University of Gdansk, 80-952 Gdansk, Poland

Bibliografia

• 1. BINGHAM S., DAOUD W.A., 2011, Recent advances in making nano-sized TiO2 visible-light active through rare-earth metal doping, J. Mater. Chem. 21, 2041–2050.
• 2. BOYD, D., GOLUNSKI, S., HEARNE, G.R., MAGADZU, T., MALLICK, K., RAPHULU, M.C., VENUGOPAL, A., SCURRELL, M.S., Reductive routes to stabilized nanogold and relation to catalysis by supported gold, Appl. Catal. A 292, 76–81.
• 3. CHEN X., MAO S.S., 2007, Titanium dioxide nanomaterials: Synthesis, properties, modifications and applications, Chem. Rev. 107, 2891–2959.
• 4. CHUANG H.,CHEN D., 2009, Fabrication and photocatalytic activities in visible and UV light regions of Ag-TiO2 and NiAg-TiO2 nanoparticles, Nanotechnology 20, 105704.
• 5. DIAMANDESCU L., VASILIU F., TARABASANU-MIHAILA D., FEDER M., VLAICU A.M., TEODORESCU C.M., MACOVEI D., ENCULESCU I., PARVULESCU V., VASILE E., 2008, Structural and photocatalytic properties of iron- and europium-doped TiO2 nanoparticles obtained under hydrothermal conditions, Mater. Chem. Phys. 112, 146–152.
• 6. FUJISHIMA A., RAO T.N., TRYK D.A., 2000, Titanium dioxide photocatalysis, J. Photochem. Photobiol., C: Photochem. Rev. 1, 1–21.
• 7. HARUTA M., TSUBOTA S., KOBAYASHI T., KAGEYAMA H., GENET M.J., DELMON B., Low-temperature oxidation of CO over gold supported on TiO2, α-Fe2O3, and Co3O4, 1993, J. Catal. 144, 175–192.
• 8. HASSAN M.S., AMNA T., YANG O.-B., KIM H.-C., KHIL M.-S., 2012, TiO2 nanofibers doped with rare earth elements and their photocatalytic activity, Ceram. Int. 38, 5925–5930.
• 9. HE Y.Q., XU X., SONG S., XIE L., TU J.J., CHEN J.M., YAN B., 2008, A visible light-driven titanium dioxide photocatalyst codoped with lanthanum and iodine: an application in the degradation of oxalic acid, J. Phys. Chem. C 112, 16431–16437.
• 10. IBHADON A.O., FITZPATRICK P., 2013, Heterogeneous photocatalysis: recent advances and applications, Catalysts 3, 189–218.
• 11. KANARJOV P., REEDO V., OJA ACIK I., MATISEN L., VOROBJOV A., KIISK V., KRUNKS M., SILDOS I., 2008, Luminescent materials based on thin metal oxide films doped with rare earth ions, Phys. Solid State 50, 1727–1730.
• 12. KOWALSKA E., MAHANEY O.O., ABE R., OHTANI B., 2010, Visible-light-induced photocatalysis through surface plasmon excitation of gold on titania surfaces Phys. Chem. Chem. Phys. 12, 2344–2355.
• 13. LIU H., YU L., CHEN W., LI Y., 2012, The progress of TiO2 nanocrystals doped with rare earth ions J. Nano Mat. 2012, art. no. 235879.
• 14. NISCHK M., MAZIERSKI P., GAZDA M., ZALESKA A., 2014, Ordered TiO2 nanotubes: The effect of preparation parameters on the photocatalytic activity in air purification process, App. Catal. B-Environ. 144, 674–685.
• 15. PARIDA K.M., MOHAPATRA P., MOMA J., JORDAAN W.A., SCURRELL M.S., 2008, Effects of preparation methods on gold/titania catalysts for CO oxidation, J. Mol. Catal. A: Chem. 288, 125–130.
• 16. PARIDA K.M., SAHU N., 2008, Visible light induced photocatalytic activity of rare earth titania nanocomposites, Appl. Catal. A 287, 151–158.
• 17. SU C., HONG B.Y., TSENG C.M., 2004, Sol-gel preparation and photocatalysis of titanium dioxide, Catal. Today 96, 119–126.
• 18. STENGL V., BAKARDJIEVA S., MURAFA N., 2009, Preparation and photocatalytic activity of rare earth doped TiO2 nanoparticles, Mater. Chem. Phys. 114, 217–226.
• 19. XU A.W., GAO Y., LIU H.Q., 2002, The preparation, characterization, and their photocatalytic activities of rare-earth-doped TiO2 nanoparticles, J. Catal. 207, 151–157.
• 20. YANG Z., ZHU K., SONG Z., ZHOU D., YIN Z., QIU J., 2011, Preparation and upconversion emission properties of TiO2: Yb, Er inverse opals, Sol. Stat. Comm. 151, 364–367.
• 21. ZALESKA A., SOBCZAK J.W., GRABOWSKA E., HUPKA J., 2007, Preparation and photocatalytic activity of boron-modified TiO2 under UV and visible light, Appl. Catal. B 78, 92–100.
• 22. ZIELINSKA-JUREK A., KOWALSKA E., SOBCZAK J., LISOWSKI W., OHATANI B., ZALESKA A., 2011, Preparation and characterization of monometallic (Au) and bimetallic (Ag/Au) modified-titania photocatalysts activated by visible light, Appl. Catal. B 101, 504–514.